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HYDRAULIC FLUID ALARM `DANGER LEVEL' SWITCH/INDICATOR LIGHTS
NO COOL AIR FLOW (STATIC MODE, INTERNAL POWER) cont'd -812530148

TM-10-5410-228-24 Chemical Biologiocal Protective Shelter (CBPS) System NSN 5410-01-441-8054 (Green) (EIC:5ZT) NSN 5410-01-482-4633 (Tan) Manual
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TM 10-5410-228-24
18. NO COOL AIR FLOW (STATIC MODE, INTERNAL POWER) NO HIGH OR LOW PRESSURE
ALARM.
With system running:
NOTE: The air conditioner will not
ESS MODE selector switch set to COOL and
run if the ambient air
TEMP CONTROL (A4R1) to COOL.
temperature is too cool to
Gain access to ECU covers (see para 2.14.1).
satisfy the thermostat.
Open cover.
Check if compressor is turning.
Is
Turn override button
Is
hydraulic
No
No
counterclockwise on
compressor
drive motor
solenoid valve SV4
turning?
turning?
(see para 2.14.4).
Yes
Yes
Gain access to refrigeration
Check shaft coupling.
solenoid valves RSV1 and
Notify direct support to repair
RSV3 (see paras 3.9.12 and
or replace as required.
3.9.13 for location).
Remove connector plugs
Is
from solenoid valves.
Remove connector
Yes
hydraulic
Test for 24 Vdc across
plug from solenoid
drive motor
connector plug pins.
valve SV4.
turning?
Test for 24 Vdc.
No
Is
Is
Check hydraulic valves
No
No
24 Vdc
24 Vdc
RD3 (see para 2.14.5).
present?
Check hydraulic system.
present?
Adjust or replace as
required per para 2.14.5.
Yes
Yes
Replace solenoid valve
SV4.
Is
Yes
hydraulic
Return unit to service.
drive motor
turning?
No
1
2
3
2-61






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